RET and medullary thyroid gland carcinoma: In its first 6203 cytologically indeterminate specimens, 5779 specimens passed all quality control requirements and received a final result, including 3% BRAFV600E classifier positive, 0.6% parathyroid classifier positive, 0.4% RET/PTC1 or RET/PTC3 fusion positive, and 0.3% medullary thyroid cancer classifier positive.